RO3116
• Ideal for LO in 303.825 MHz Superhet Receivers with 500 kHz IF
• Very Low Series Resistance
• Quartz Stability
303.325 MHz
SAW
Resonator
• Rugged, Hermetic, Low-Profile TO39 Case
• Complies with Directive 2002/95/EC (RoHS)
Pb
The RO3116 is a true one-port, surface-acoustic-wave (SAW) resonator in a low-profile TO39 case. It provides
reliable, fundamental-mode, quartz frequency stabilization of local oscillators operating at approximately
303.325 MHz. The RO3116 is designed for IC-based 303.825 MHz superhet receivers with 500 kHz IF
(Philips UAA3201T). Applications include wireless remote-control and security receivers operating in the USA
under FCC Part 15, in Japan, in Australia, and in Korea.
Absolute Maximum Ratings
Rating
Value
Units
CW RF Power Dissipation (See: Typical Test Circuit)
+0
dBm
DC Voltage Between Any Two Pins (Observe ESD Precautions)
Case Temperature
±30
-40 to +85
260
VDC
°C
TO39-3 Case
Soldering Temperature (10 seconds/5 cycles maximum)
°C
Electrical Characteristics
Characteristic
Sym
Notes
Minimum
Typical
Maximum
Units
Center Frequency (+25 °C)
Absolute Frequency
f
303.250
303.400
MHz
kHz
dB
C
2, 3, 4, 5
Tolerance from 303.325 MHz
∆f
±75
1.5
C
Insertion Loss
Quality Factor
IL
1.0
14,400
1,300
25
2, 5, 6
5, 6, 7
Unloaded Q
Q
U
50 Ω Loaded Q
Q
L
Temperature Stability
Turnover Temperature
Turnover Frequency
T
f
10
1.0
3.1
40
°C
O
f
6, 7, 8
O
C
2
Frequency Temperature Coefficient
Absolute Value during the First Year
FTC
0.037
ppm/°C
Frequency Aging
|f |
≤10
ppm/yr
MΩ
Ω
1
5
A
DC Insulation Resistance between Any Two Pins
RF Equivalent RLC Model
Motional Resistance
R
10.2
76.7
3.6
M
Motional Inductance
L
µH
fF
5, 7, 9
M
Motional Capacitance
C
M
Pin 1 to Pin 2 Static Capacitance
Transducer Static Capacitance
C
5, 6, 9
5, 6, 7, 9
2, 7
3.2
pF
O
C
3.0
pF
P
Test Fixture Shunt Inductance
L
87
nH
TEST
Lid Symbolization (in Addition to Lot and/or Date Codes)
RFM RO3116
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1.
2.
Frequency aging is the change in f with time and is specified at +65°C or
C
7.
Derived mathematically from one or more of the following directly
measured parameters: f , IL, 3 dB bandwidth, f versus T , and C .
less. Aging may exceed the specification for prolonged temperatures
above +65°C. Typically, aging is greatest the first year after manufacture,
decreasing significantly in subsequent years.
C
C
C
O
8.
Turnover temperature, T , is the temperature of maximum (or turnover)
O
frequency, f . The nominal frequency at any case temperature, T , may be
O
C
The center frequency, f , is measured at the minimum insertion loss point,
C
2
calculated from: f = f [1 - FTC (T -T ) ]. Typically, oscillator T is 20°C
O
O
C
O
IL , with the resonator in the 50 Ω test system (VSWR ≤ 1.2:1). The
MIN
less than the specified resonator T .
O
shunt inductance, L
, is tuned for parallel resonance with C at f .
TEST
O C
9.
This equivalent RLC model approximates resonator performance near the
resonant frequency and is provided for reference only. The capacitance C
Typically, f
or f
is less than the resonator f .
TRANSMITTER C
OSCILLATOR
O
3.
4.
One or more of the following United States patents apply: 4,454,488 and
4,616,197 and others pending.
is the static (nonmotional) capacitance between pin1 and pin 2 measured
at low frequency (10 MHz) with a capacitance meter. The measurement
includes case parasitic capacitance with a floating case. For usual
grounded case applications (with ground connected to either pin 1 or pin 2
Typically, equipment designs utilizing this device require emissions testing
and government approval, which is the responsibility of the equipment
manufacturer.
and to the case), add approximately 0.25 pF to C .
O
5.
6.
Unless noted otherwise, case temperature T = +25°C±2°C.
C
The design, manufacturing process, and specifications of this device are
subject to change without notice.
www.RFM.com E-mail: info@rfm.com
©2009 by RF Monolithics, Inc.
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RO3116 - 2/9/09